El Barbudo wrote:If I turn off all the thermostatic valves in the house except the one in the office and then take the room stat (set at 19c) into the office and leave the office rad valve on maximum, will that achieve a nice cold house but a steady temperature of 19c in the office?
This'll do the trick as long as you have a bypass rad (no TRV) somewhere (probably hall or bathroom).
Electric room heaters are very costly to run.